Taberna del Alberdero has one of the best happy hours in town during the week. Get there early though because it's usually only served in the rather small bar area----1/2 all tapas and sangria. Great deal, especially since this is often times a rather pricey place.

I prefer to go here in the warmer months because you can also sit outside and take advantage of the deal. They serve the most wonderful chicken croquettas.